Abstract
AbstractHumidity sensitive films with the structure of an interpenetrating network were prepared through simultaneous quaternization and crosslinking of poly(4‐vinylpyridine) and poly(glycidyl methacrylate) with 1,4‐dibromobutane and diethyltriamine, respectively, on the interdigital electrodes. The effect of the composition of humidity sensitive film and the concentration of dip‐coating solution on the humidity sensitive properties of the sensors have been investigated. The humidity sensors so prepared exhibit little hysteresis (<1% RH [relative humidity]) and the response time for adsorption and desorption between 80% RH and 54% RH is about 21 s and 3 s, respectively, suggesting a very fast response. © 2007 Wiley Periodicals, Inc. J Appl Polym Sci 2007
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